X-Rated Definition: Sexually explicit material. In Frontenac, federal inmates were upset because their cable provided had blocked out the few porn movies that occasionally aired in the late hours of the evenings. Justice Harrington of the Federal Court of Canada had before him a contract which required that: "... any x-rated ... movies shall be blocked out from viewing." He adopted this definition of x-rated: "... indecent, pornographic (from X a film classification formerly applied to films suitable for adults only).... sexually explicit." REFERENCES: Frontenac Institution Inmate Committee v. Canada (Correctional Services) 2004 FC 580; also at 130 ACWS 3d 737 and 2004 FCJ 703 Find you are constantly looking up definitions? Try our search provider (works in most modern browsers) If you find an error or omission in Duhaime's Legal Dictionary, or if you have legal term suggestion, we'd love to hear from you!